---
title: "OTTO main image checker — free, in your browser | Herofab"
description: "Check a product photo against OTTO's main-image rules: background colour. Free in your browser; nothing is uploaded."
url: https://herofab.app/tools/otto-product-photo-checker
language: en
updated: 2026-11-12
---

# Check your photo against OTTO's rules.

The published image guide for OTTO says: JPG or PNG, at least 480 × 960 pixels, at most 4,500 pixels per side, RGB; the main image cut out or on a light, neutral background.. OTTO sets rules for the main image that can be measured from the photo: background colour. Drop a photo to see which ones it meets. It runs in your browser; nothing is uploaded.

![The brown leather tote alone on a white studio background, front view · OTTO main image checker](https://herofab.app/img/ex/tote-packshot-1100.webp)

Made with Herofab · Packshot studio

## Choose a marketplace and a photo.

Rules come from each marketplace's own help pages, summarised in the [guides](https://herofab.app/guides/) (checked 10 October 2026). Size, file size and format are checked as well.

## What OTTO asks for.

Source: [OTTO Market — Onboarding guide (18 January 2024)](https://www.otto.market/_Resources/Persistent/4/0/f/9/40f93e8e8315a91f7c8dab0e2bf4cf14057d1279/18012024_Onboarding-Guide.pdf) · checked 10 October 2026 · [Read again · 13 October 2026](https://herofab.app/guides/marketplace-image-rule-changes)

- **Main image:** Light, neutral background Cut out, or on a light, neutral background such as light grey, white, off-white or light beige
- **Format:** JPG or PNG, RGB colour space (CMYK is not accepted)
- **Size:** At least 480 × 960 pixels; at most 4,500 pixels on any side
- **Number:** At least one image per variant; a limit of 10 images per variant should not be exceeded
- **Product fill:** The product takes up 85% of the image area
- **Accuracy:** Only the product that matches the product description, in the matching product variant
- **Props:** Few or no props, and it must be made clear that props are not included in the delivery
- **File name:** No special characters or umlauts in the file name
- **Energy label:** Energy-efficiency information must not appear in the product images; it is submitted as data
- **Where:** Germany
- **OTTO image resizer:** 2,000 × 2,000 px — inside OTTO's limits: at least 480 × 960 pixels, at most 4,500 pixels on any side.
- **Herofab:** 2,000 × 2,000 px, within the limits OTTO publishes

[How each rule is measured.](https://herofab.app/tools/product-photo-checker#h-how)

[OTTO image guide](https://herofab.app/guides/otto-product-image-requirements) · [Product photo checker](https://herofab.app/tools/product-photo-checker)

## Checkers by marketplace.

[Galaxus](https://herofab.app/tools/galaxus-product-photo-checker) · [Shopee](https://herofab.app/tools/shopee-product-photo-checker) · [Product photo checker](https://herofab.app/tools/product-photo-checker)

## OTTO main images, answered.

**What background does OTTO require for the main image?**

Light, neutral background. The checker reads the background from the edges of the photo and reports its exact RGB value.

**OTTO's image guide: what does it say about Size?**

At least 480 × 960 pixels; at most 4,500 pixels on any side

**OTTO's image guide: what does it say about Number?**

At least one image per variant; a limit of 10 images per variant should not be exceeded

**Where do these figures come from?**

From OTTO Market — Onboarding guide (18 January 2024), read on 10 October 2026. Marketplaces update their rules; the [official page](https://www.otto.market/_Resources/Persistent/4/0/f/9/40f93e8e8315a91f7c8dab0e2bf4cf14057d1279/18012024_Onboarding-Guide.pdf) is the final reference.

**Is my image uploaded?**

No. The file is read and processed inside your browser; nothing is sent to a server.